Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/26—Aluminium; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/43—Guanidines
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/60—Sugars; Derivatives thereof
  • A61K8/604—Alkylpolyglycosides; Derivatives thereof, e.g. esters

Definitions

• This invention relates to a toothpaste in the form of a dispersion of water-insoluble polishing agents in an aqueous carrier which contains an antimicrobial biguanide compound as plaque-inhibiting component and of which the other components are selected in regard to type and quantity so that optimal inhibition of plaque formation is obtained despite a relatively low dosage of the antimicrobial biguanide compounds.
• antimicrobial biguanide compounds are effective in inhibiting the formation of plaque.
• their effect in this regard is greatly reduced or totally eliminated by many components typically present in toothpastes, more particularly by certain polishing agents, by many binders or consistency regulators, surfactants and even by sweeteners.
• the present invention relates to a toothpaste in the form of a dispersion containing
• additives from the group consisting of surfactants, flavoring oils and sweeteners,
• nonionic polysaccharide derivatives as consistency regulators
• flavouring oil an alkyl glycoside and optionally a nonionic solubilizer for the flavouring oil as surfactants and
• ⁇ -Aluminum oxide trihydrate, Al (OH) 3 is a known polishing agent for toothpastes.
• a ground quality in which the particles are predominantly (at least 98%) smaller than 50 ⁇ in size with an average of approximately 1 to 10 ⁇ is particularly suitable.
• the toothpaste according to the invention preferably contains a mixture of ⁇ -aluminium oxide trihydrate (A) and a weakly calcined alumina (B) in a ratio by weight of A to B of 100 : (1-15) in a quantity of 30 to 604 by weight, because a particlularly good polishing effect with no roughening secondary effect is obtained in this way.
• A ⁇ -aluminium oxide trihydrate
• B weakly calcined alumina
• the weakly calcined alumina preferably has a gamma-aluminium oxide ( ⁇ -Al 2 O 3 ) content of approximately 20% by weight and an alpha-aluminium oxide ( ⁇ -Al 2 O 3 ) content of approximately 80% by weight, an agglomerate size below 20 ⁇ , an average primary crystal size of 0.5 to 1.5 ⁇ and an apparent density of 500 to 600 g/l.
• ⁇ -Al 2 O 3 gamma-aluminium oxide
• ⁇ -Al 2 O 3 alpha-aluminium oxide
• Suitable weakly calcined aluminas are obtained by calcination from aluminium hydroxide. Aluminium hydroxide is converted by calcination into ⁇ -Al 2 O 3 which is thermodynamically stable at temperatures above 1,200° C.
• the thermodynamically unstable forms of Al 2 O 3 occurring at temperatures between 400° and 1,000° C. are known as gamma forms (cf. Ullmann, Encyclopadie der ischen Chemie, 4th Edition (1974), Vol. 7, page 298).
• the degree of calcination i.e. the conversion into the thermodynamically stable ⁇ -Al 2 O 3 , can be adjusted as required through the calcination temperature and the calcination time.
• Weakly calcined aluminas are distinguished from pure ⁇ -Al 2 O 3 by lower agglomerate hardness, a larger specific surface and larger pore volumes.
• Aluminium oxide polishes are commercially available in various degrees of calcination, fineness and apparent density, as for example the “Poliertonerden (Polishing Aluminas)" of Giulini Chemie.
• humectants used include glycerol, sorbitol, propylene glycol and polyethylene glycols; glycerol and/or sorbitol are preferred.
• Suitable water-soluble consistency regulators are the nonionic polysaccharide derivatives, for example methyl, hydroxyethyl and hydroxypropyl ethers, of cellulose, starch, guar and vegetable gums. Hydroxyethyl cellulose and methyl hydroxypropyl cellulose are preferably used.
• chlorhexidine 1,1'-hexamethylene bis- [5- (4-chlorophenyl) -biguanide]
• chlorhexidine known from GB-A-705,838 in the form of a water-soluble, physiologically compatible salt, for example in the form of the acetate or gluconate, is preferably used as the antimicrobial biguanide compound.
• antimicrobial biguanide compounds suitable for use in accordance with the invention are, for example, 1,1'-hexamethylene bis-[5-(4-fluorophenyl)-biguanide] (fluorhexidine) the polyhexamethylene biguanide compounds of the Vantocil® IB (ICI) type known from GB-A-702,268 and also the antimicrobial biguanide compounds known from U.S. Pat. Nos. 2,684,924, 2,990,425, 3,468,898, 4,022,834, 4,053,636 and 4,198,392.
• Nonionic surfactants of the alkyl glycoside type are used as surfactants in the toothpastes according to the invention.
• Alkyl glycosides, their production and their use as surfactants are known, for example, from U.S. Pat. Nos. 3,839,318, 3,707,535, 3,547,828, DE-A-19 43 6891 DE-A-20 36 472 and DE-A-30 01 064 and from EP-A-77 167. They are prepared in particular by reaction of glucose or oligosaccharides with primary C 8-16 alcohols.
• both monoglycosides in which a cyclic sugar residue is attached to the fatty alcohol by a glycoside bond and oligomeric glycosides having a degree of oligomerization (OG) of preferably up to 3 are suitable.
• Preferred alkyl glycosides for the production of the preparations according to the invention are those containing 8° to 18° C. atoms in the alkyl group and having an average degree of oligomerization of the glycoside residue of 1 to 3.
• the degree of oligomerization (OG) is a statistical mean value based on a homolog distribution typical of such industrial products.
• the alkyl glycosides are preferably present in the toothpaste according to the invention in quantities of 0.025 to 2.5% by weight.
• the organoleptic properties of the toothpaste according to the invention can be improved by the addition of flavoring oils and sweeteners.
• Suitable flavoring oils are any of the natural and synthetic flavors typically used in oral and dental hygiene preparations. Natural flavors may be used both in the form of essential oils isolated from the drugs and in the form of the individual components isolated from the essential oils.
• the toothpaste should preferably contain at least one flavoring oil from the group consisting of peppermint oil, spearmint oil, anise oil, Japanese anise oil, caraway oil, eucalyptus oil, fennel oil, cinnamon oil, clove oil, geranium oil, sage oil, pimento oil, thyme oil, marjoram oil, basil oil, lemon oil, wintergreen oil or one or more synthetic components of these oils isolated therefrom.
• at least one flavoring oil from the group consisting of peppermint oil, spearmint oil, anise oil, Japanese anise oil, caraway oil, eucalyptus oil, fennel oil, cinnamon oil, clove oil, geranium oil, sage oil, pimento oil, thyme oil, marjoram oil, basil oil, lemon oil, wintergreen oil or one or more synthetic components of these oils isolated therefrom.
• oils mentioned are, for example, menthol, carvone, anethol, cineol, eugenol, cinnamaldehyde, caryophyllene, geraniol, citronellol, linalool, salvene, thymol, terpinene, terpineol, methyl chavicol and methyl salicylate.
• suitable flavors are, for example, menthyl acetate, vanillin, ionone, linalyl acetate, rhodinol and piperitone.
• a nonionic solubilizer is necessary for solubilizing these mostly water-insoluble flavoring oils.
• the solubilizers in question belong to the group of surface-active compounds.
• the present invention also relates to a toothpaste according to the invention containing 0.1 to 0.5% by weight of a flavoring oil and 0.1 to 0.7% by weight of a nonionic solubilizer, preferably from the group consisting of ethoxylated fatty acid glycerides, ethoxylated fatty acid sorbitan partial esters or fatty acid partial esters of glycerol or sorbitan ethoxylates.
• Solubilizers from the group of ethoxylated fatty acid glycerides comprise above all adducts of 20 to 60 mol ethylene oxide with mono- and diglycerides of linear C 12-18 fatty acids or with triglycerides of hydroxyfatty acids, such as hydroxystearic acid or ricinoleic acid.
• Other suitable solubilizers are ethoxylated fatty acid sorbitan partial esters, i.e. preferably adducts of 20 to 60 mol ethylene oxide with sorbitan monoesters and sorbitan diesters of C 12-18 fatty acids.
• Fatty acid partial esters of glycerol or sorbitan ethoxylates i.e. preferably mono- and diesters of C 12-18 fatty acids and adducts of 20 to 60 mol ethylene oxide with 1 mol glycerol or with 1 mol sorbitol, are also suitable solubilizers.
• the toothpaste according to the invention preferably contains adducts of 20 to 60 mol ethylene oxide with hydrogenated or non-hydrogenated castor oil (i.e. with hydroxystearic acid or ricinoleic acid triglyceride) , with glycerol mono- and/or distearate or with sorbitan mono- and/or distearate as solubilizers for any flavoring oils present.
• hydrogenated or non-hydrogenated castor oil i.e. with hydroxystearic acid or ricinoleic acid triglyceride
• glycerol mono- and/or distearate or with sorbitan mono- and/or distearate as solubilizers for any flavoring oils present.
• Suitable sweeteners are either natural sugars, for example sucrose, maltose, lactose and fructose, or synthetic sweeteners, but preferably nonionic or amphoteric substances.
• L-Aspartyl-L-phenyl alanine methyl ester commercially available under the name of Aspartame® is particularly suitable as the sweetener.
• caries-inhibiting agents such as sodium fluoride or sodium monofluorophosphate
• pigments for example titanium dioxide
• pH regulators for adjusting a pH value of preferably 6 to 8 and buffers, for example citric acid and salts thereof or phosphoric acid and alkali salts thereof,
• wound-healing and anti-inflammatory agents such as for example allantoin, urea, azulene and active substances from camomile.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Veterinary Medicine (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Inorganic Chemistry (AREA)
• Chemical & Material Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Cosmetics (AREA)
• Steroid Compounds (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6387830

Family Applications (1)

Country Status (15)

Cited By (9)

Families Citing this family (10)

Citations (21)

• 1989
  • 1989-08-25 DE DE3928063A patent/DE3928063A1/de not_active Withdrawn
• 1990
  • 1990-08-16 AT AT90912304T patent/ATE114965T1/de not_active IP Right Cessation
  • 1990-08-16 DK DK90912304.4T patent/DK0489049T3/da active
  • 1990-08-16 JP JP2511369A patent/JPH04507413A/ja active Pending
  • 1990-08-16 EP EP90912304A patent/EP0489049B1/de not_active Expired - Lifetime
  • 1990-08-16 ES ES90912304T patent/ES2064754T3/es not_active Expired - Lifetime
  • 1990-08-16 RU SU905011453A patent/RU2080107C1/ru active
  • 1990-08-16 DE DE59007951T patent/DE59007951D1/de not_active Expired - Fee Related
  • 1990-08-16 US US07/835,920 patent/US5292500A/en not_active Expired - Fee Related
  • 1990-08-16 EP EP90115688A patent/EP0414128A1/de active Pending
  • 1990-08-16 BR BR909007616A patent/BR9007616A/pt not_active Application Discontinuation
  • 1990-08-16 WO PCT/EP1990/001346 patent/WO1991002513A1/de active IP Right Grant
  • 1990-08-16 KR KR1019920700423A patent/KR920703002A/ko not_active Application Discontinuation
  • 1990-08-16 CA CA002065268A patent/CA2065268A1/en not_active Abandoned
  • 1990-08-20 PT PT95041A patent/PT95041B/pt not_active IP Right Cessation
  • 1990-08-24 CN CN90106868A patent/CN1041382C/zh not_active Expired - Fee Related
  • 1990-08-25 MY MYPI90001444A patent/MY107419A/en unknown

Patent Citations (24)

Non-Patent Citations (4)

Also Published As

Similar Documents

Legal Events